Read Sony HT-K25 / TA-VE25 Service Manual online
7
7
TA-VE25
SECTION 3
DIAGRAMS
NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
Note on Printed Wiring Board:
•
•
X
: parts extracted from the component side.
•
f
: internal component.
•
b
: Pattern from the side which enables seeing.
•
Indication of transisitor.
Note on Schematic Diagram:
• All capacitors are in
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
f
: internal component.
•
C
: panel designation.
•
U
: B+ Line.
•
V
: B– Line.
• Power voltage is DC 12V, 5.6V and fed with subwoofer
(SA-WMS25) from external CONTROL jack.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
• Signal path.
F
: ANALOG
c
: DIGITAL
C
B
These are omitted.
E
Q
B
These are omitted.
C
E
Q
MAIN BOARD
LED BOARD
ENC BOARD
SW BOARD
DISP BOARD
CIRCUIT BOARDS LOCATION
1
Q101 collector
– MAIN Board –
42.4 V
153.5 kHz
2
IC203
id
XI
– DISP Board –
6.1 V
16 MHz
• Waveforms
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